Home / 458,182.20-687,446.10-221,734.20

Finding the Fourth Proportional to 458,182.20, 687,446.10 and 221,734.20

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Solution

The fourth proportional to 458,182.20, 687,446.10 and 221,734.20 is: 332,684.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,182.20 : 687,446.10 = 221,734.20 : x
  2. Step 2: Convert to fraction form
    458,182.20/687,446.10 = 221,734.20/x
  3. Step 3: Cross multiply
    458,182.20x = 687,446.10 × 221,734.20
  4. Step 4: Simplify right side
    458,182.20x = 152,430,311,026.62
  5. Step 5: Solve for x
    x = 152,430,311,026.62/458,182.20
  6. Step 6: Final answer
    x = 332,684.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.